Pressure cooker having bayonet mount and related manufacturing method

Abstract

The invention relates to a food pressure cooking appliance including a bowl and a lid intended to be locked relative to the bowl to form with the latter a cooking chamber adapted to rise in pressure. The appliance also including bayonet locking means forming first and second series of protrusions that are integral with the envelope of the lid and the envelope of the bowl, respectively, and that are intended to cooperate with each other to ensure the locking of the lid relative to the bowl. Each protrusion of at least one of said series is consisted by a volume element that has opposite convex and concave faces, and that is formed by a localized radial deformation of the corresponding envelope.

Description

TECHNICAL AREA[0001]The present invention relates to the general technical field of food pressure cooking appliances, and in particular the household appliances of the pressure cooker type intended to form a cooking chamber able to rise in pressure in order to ensure the steam-pressure cooking of food contained therein.[0002]The present invention more particularly relates to a food pressure cooking appliance including at least a bowl and a lid intended to be locked relative to the bowl to form with the latter a cooking chamber adapted to rise in pressure, as well as bayonet locking means forming first and second series of protrusions that are integral with the envelope of the lid and the envelope of the bowl, respectively, and that are intended to cooperate with each other to ensure the locking of the lid.[0003]The present invention also relates to a method of manufacturing a food pressure cooking appliance including at least a bowl and a lid intended to be locked relative to the bo...

AI Technical Summary

Benefits of technology

This patent proposes a new pressure cooking appliance with a locking mechanism that is efficient, safe, easy to handle, and has good properties of affordance and aesthetics. The locking mechanism is particularly resistant to deformation, can be manufactured in a simple and cost-effective way, and allows for easy and intuitive user confirmation of the lid's locking. This patent also presents a new method for manufacturing the pressure cooking appliance that is simple and economical.

Problems solved by technology

In particular, due to their design itself, the bowl and lid ramps have a resistance to deformation, and in particular to bending, which is far from being optimum.

The conventional bayonet locking systems implemented in the known pressure cookers are hence based on the use of lid and bowl ramps of great lengths, which provides the pressure cooker with a not very valuable aesthetical character, due in particular to the relatively unstructured aspect of the bowl edge, in which are formed notches (allowing the engagement of the lid ramps) that extend over at least half the perimeter of the bowl edge.

The bayonet locking systems implemented in the known pressure cookers hence necessarily induce very specific conformations and sizes of the bowl and lid edges, which limit in particular the possibility of accessorization of the concerned pressure cookers, and affect significantly the general aspect thereof.

The great angular stroke may further be difficult to follow due to the frictions between the bowl and lid ramps (as well as the sealing gasket) that it implies.

Finally, the known bayonet pressure-cooker locking systems are absolutely not optimized as regards in particular their mechanical behaviour (mechanical resistance and resistance to deformation), their weight, their aesthetics, their ergonomics, and their easiness of use.

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